462 



DR. CHARLES H. LEES ON THE EFFECT OF TEMPERATURE ON THE 



Diphenylamine. (From KAHLBAUM, M.P. = 54 C.) 



Obtained by melting the crystals over a water bath, filling the brass tube, and 

 freezing slowly from beneath. 



p 

 CURRENT in Heaters '991 ampere. C a = '982. k p = '00971 |- 



